Uranyl Heteropolyoxometalate: Synthesis, Structure, and Spectroscopic Properties
- Pius O. Adelani (1705084)
- Allen G. Oliver (1314324)
- Thomas E. Albrecht-Schmitt (1370601)
Publication date
May 2012
DOIAbstract
A novel uranium heteropolyoxometalate, [H<sub>3</sub>O]<sub>4</sub>[Ni(H<sub>2</sub>O)<sub>3</sub>]<sub>4</sub>{Ni[(UO<sub>2</sub>)(PO<sub>3</sub>C<sub>6</sub>H<sub>4</sub>CO<sub>2</sub>)]<sub>3</sub>(PO<sub>4</sub>H)}<sub>4</sub>·2.72H<sub>2</sub>O, has been prepared under mild hydrothermal conditions using the diethyl(2-ethoxycarbonylphenyl)phosphonate ligand and <i>in situ</i> ligand synthesis of the HPO<sub>4</sub><sup>2–</sup> anion. The cluster is derived from a common UO<sub>7</sub>, pentagonal bipyramid and is constructed by employing nickel(II) metal ions as linkers. The 3d–5f heteropolyoxometalate core incorporates 12 classical pentagonal uranyl groups and four Ni<sup>2+</sup> octahedral units
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